package com.csdj.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.csdj.reggie.commcn.R;
import com.csdj.reggie.dto.DishDto;
import com.csdj.reggie.entity.Category;
import com.csdj.reggie.entity.Dish;
import com.csdj.reggie.entity.DishFlavor;
import com.csdj.reggie.service.CategoryService;
import com.csdj.reggie.service.DishFlavorService;
import com.csdj.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping()
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息对应的口味信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品信息
     *
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }

    /**
     * 根据菜品id修改菜品状态
     *
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> update(@PathVariable Integer status, Long[] ids) {
        log.info("id为{}的套餐目前状态为", ids, status);
        for (int i = 0; i < ids.length; i++) {
            Dish dish = dishService.getById(ids[i]);
            dish.setStatus(status);
            dishService.updateById(dish);
        }
        return R.success("状态修改成功");
    }

    /**
     * 根据id数组删除菜品信息
     *
     * @param ids
     * @return
     * @throws Exception
     */
    @DeleteMapping
    public R<String> delete(Long[] ids) {
        log.info("删除id为{}的菜品信息", ids);
        List<Long> idList = Arrays.asList(ids);

        // 根据id删除所对应的口味对象。
        for (int i = 0; i < ids.length; i++) {
            Long id = ids[i];
            LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(DishFlavor::getDishId, id);
            dishFlavorService.remove(queryWrapper);
        }
        // 执行删除菜品。
        if (!dishService.removeByIds(idList)) {
            return R.success("删除菜品失败");
        }
        return R.success("删除菜品成功");
    }

   /* @GetMapping("/list")
    public R<List<Dish>> list(Dish dish){
        log.info("根据分类id：{}查询数据",dish.getCategoryId());
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        // 添加条件，菜品状态为启售中
        queryWrapper.eq(Dish::getStatus,1);

        // 如果菜品分类不为空，添加条件
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        // 添加排序添加
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        // 查询数据
        List<Dish> list = dishService.list(queryWrapper);
        // 返回R < list < Dish > >数据
        return R.success(list);

    }*/

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        log.info("根据分类id：{}查询数据",dish.getCategoryId());
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        // 添加条件，菜品状态为启售中
        queryWrapper.eq(Dish::getStatus,1);

        // 如果菜品分类不为空，添加条件
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        // 添加排序添加
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        // 查询数据
        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> queryWrapper1=new LambdaQueryWrapper<>();
            queryWrapper1.eq(DishFlavor::getDishId,dishId);

            List<DishFlavor> list1 = dishFlavorService.list(queryWrapper1);
            dishDto.setFlavors(list1);
            return dishDto;
        }).collect(Collectors.toList());


        return R.success(dishDtoList);

    }

}
